Section 8 Maintenance
8-7
flush, or run a high percentage of %B solvent through the
system for a few minutes at the end of each day.
If the separation runs always continue through the flush and
the conditions still occur frequently, edit the default column
methods to extend the flush duration.
CAUTION
Do
not
use
polar,
basic
solvent
systems
with
silica
column
media.
These
solvent
systems
may
break
down
the
silica
structure,
possibly
causing
obstructions
in
the
flow
path.
Examples
of
such
solvent
systems
include,
but
are
not
limited
to,
those
containing
more
than
20%
methanol
with
ammonia.
8.5.2 Quick Cleaning when Recommended
When the lamp energy is lower than normal, the system will
recommend flow cell cleaning (Figure 8-4) before starting a
separation run.
Figure 8-4 Flow cell cleaning message
When the system displays this message you can:
•
Cancel Run
(recommended) – Click the Cancel Run
button so you can perform a quick cleaning described in
the following steps.
•
Continue Collect All
– Click this button to ignore the
message. Because the peak detection operation might be
impaired, the system automatically collects all fluids to
avoid diverting compounds of interest to waste.
•
Help
– Click this button to display the flow cell cleaning
on-line help topic.
To perform a quick cleaning:
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